I looked up a 2000 Z28, here are the part numbers. Not sure what the vin codes mean, probably auto or manual. The prices didn't seem too high to me until I looked at the after market carpets. There were also listings for Neutral and Pewter, they should be around the same price.
RPO F87
Ebony P/N 10420491 $582.66
RPO F67
Ebony P/N 10410768 $568.85
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